The new documents include a video reenactment of the Trayvon Martin shooting, a computer voice stress analyzer and several text and audio files. The material was posted overnight on GZLegalCase.com, a website set up by the Mark O'Mara Law Firm.

George Zimmerman's written statement is also among the files released overnight.

In his statement, Zimmerman first writes about break-ins in his neighborhood and tells about the formation of the volunteer neighborhood watch.

"We were instructed by the SPD to call their non-emergency line if we saw anything suspicious and 911 if we saw a crime in progress," Zimmerman writes.

Zimmerman then writes about his encounter with Martin.

"Tonight, I was on my way to the grocery store when I saw a male approximately 5'11" to 6'2" walking casually in the rain and looking into houses," Zimmerman says in the narrative.

Zimmerman says he called the Sanford Police Department's non-emergency line to report the teen later identified as Martin. He said the "suspect," as he refers to him in the narrative, then disappeared and reappeared several times.

"As I headed back to my vehicle, the suspect emerged and said, 'You got a problem?' I said, 'No,'" Zimmerman says.

Zimmerman says he then tried to reach for his phone to dial 911 and Martin punched him in the face. Zimmerman says he fell backwards and Martin got on top of him.

"Each time I tried to sit up, the suspect slammed my head into the sidewalk," Zimmerman wrote. "I felt the suspect reach for my now exposed firearm and said, 'You gonna die tonight mother (expletive)."

Zimmerman said he then feared for his life and fired one shot into Zimmerman's torso.

In audio recording of his interrogation, Zimmerman says after he shot Martin, the 17-year-old "Kind of sat up and said, 'You got me.'"

"I don't remember if I pushed him or he fell. But somehow I got out from under him. When he was hitting me, I don't know what he was hitting me with. I thought he had something in his hands, so I grabbed his hands when I was on top of him and I spread his hands away from his body because he was still talking. And I was on top of him and that's when somebody came, and they had a flashlight too. I thought it was a police officer so I got off of him," Zimmerman says.

Along with the files is the defense team's notice of reciprocal discovery, a legal filing that lists all of the material released by the state to the defense team. The list is identical to the list of files available on the firm's website.

The firm has made a point to release evidence on its website to "dispute misinformation" and "discourage speculation."